David.
>
> Paolo
>
> 2018-02-11 16:54 GMT+01:00 Bert Gunter <bgunter.4567 at gmail.com>:
>
>> Note the typo in your 3rd line: data <
>>
>> Don't know if this means anything...
>>
>> Bert
>>
>>
>>
>> On Feb 11, 2018 7:33 AM, "PAOLO PILI" <paolo.pili at student.unife.it> wrote:
>>
>>> Hello,
>>>
>>> I have a problem with Hausman test. I am performing my analysis with these
>>> commands:
>>>
>>>> library(plm)
>>>> data<-read.csv2("paolo.csv",header=TRUE)
>>>> data<
>>> pdata.frame(data,index=c("FIRM","YEAR"),drop.index=TRUE,row.names=TRUE)
>>>>
>>> RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGROWTH+TU
>>> RN+GPROF+GPROF2
>>>>
>>> grun.fe<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROW
>>> TH+NGROWTH+TURN+GPROF+GPROF2,data=data,model="within")
>>>> grun.re
>>> <-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+NGRO
>>> WTH+TURN+GPROF+GPROF2,data=data,model="random")
>>>>
>>> gw<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+
>>> NGROWTH+TURN+GPROF+GPROF2,data=data,model="within")
>>>>
>>> gr<-plm(RECEIV~LSIZE+LAGE+LAGE2+CFLOW+STLEV+FCOST+PGROWTH+
>>> NGROWTH+TURN+GPROF+GPROF2,data=data,model="random")
>>>> phtest(gw,gr)
>>>
>>> I got this answer:
>>>
>>> Error in solve.default(dvcov) :
>>>
>>> how can I solve this problem?
>>>
>>> Thank you
>>>
>>> [[alternative HTML version deleted]]
>>>
>>> ______________________________________________
>>> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>>> https://stat.ethz.ch/mailman/listinfo/r-help
>>> PLEASE do read the posting guide http://www.R-project.org/posti
>>> ng-guide.html
>>> and provide commented, minimal, self-contained, reproducible code.
>>>
>>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
David Winsemius
Alameda, CA, USA
'Any technology distinguishable from magic is insufficiently advanced.' -Gehm's Corollary to Clarke's Third Law